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1.  Proceedings of the 13th annual conference of INEBRIA 
Watson, Rod | Morris, James | Isitt, John | Barrio, Pablo | Ortega, Lluisa | Gual, Antoni | Conner, Kenneth | Stecker, Tracy | Maisto, Stephen | Paroz, Sophie | Graap, Caroline | Grazioli, Véronique S | Daeppen, Jean-Bernard | Collins, Susan E | Bertholet, Nicolas | McNeely, Jennifer | Kushnir, Vlad | Cunningham, John A. | Crombie, Iain K | Cunningham, Kathryn B | Irvine, Linda | Williams, Brian | Sniehotta, Falko F | Norrie, John | Melson, Ambrose | Jones, Claire | Briggs, Andrew | Rice, Peter | Achison, Marcus | McKenzie, Andrew | Dimova, Elena | Slane, Peter W | Grazioli, Véronique S. | Collins, Susan E. | Paroz, Sophie | Graap, Caroline | Daeppen, Jean-Bernard | Baggio, Stéphanie | Dupuis, Marc | Studer, Joseph | Gmel, Gerhard | Magill, Molly | Grazioli, Véronique S. | Tait, Robert J. | Teoh, Lucinda | Kelty, Erin | Geelhoed, Elizabeth | Mountain, David | Hulse, Gary K. | Renko, Elina | Mitchell, Shannon G. | Lounsbury, David | Li, Zhi | Schwartz, Robert P. | Gryczynski, Jan | Kirk, Arethusa S. | Oros, Marla | Hosler, Colleen | Dusek, Kristi | Brown, Barry S. | Finnell, Deborah S. | Holloway, Aisha | Wu, Li-Tzy | Subramaniam, Geetha | Sharma, Gaurav | Wallhed Finn, Sara | Andreasson, Sven | Dvorak, Robert D. | Kramer, Matthew P. | Stevenson, Brittany L. | Sargent, Emily M. | Kilwein, Tess M. | Harris, Sion K. | Sherritt, Lon | Copelas, Sarah | Knight, John R. | Mdege, Noreen D | McCambridge, Jim | Bischof, Gallus | Bischof, Anja | Freyer-Adam, Jennis | Rumpf, Hans-Juergen | Fitzgerald, Niamh | Schölin, Lisa | Toner, Paul | Böhnke, Jan R. | Veach, Laura J. | Currin, Olivia | Dongre, Leigh Z. | Miller, Preston R. | White, Elizabeth | Williams, Emily C. | Lapham, Gwen T. | Bobb, Jennifer J. | Rubinsky, Anna D. | Catz, Sheryl L. | Shortreed, Susan | Bensley, Kara M. | Bradley, Katharine A. | Milward, Joanna | Deluca, Paolo | Khadjesari, Zarnie | Watson, Rod | Fincham-Campbell, Stephanie | Drummond, Colin | Angus, Kathryn | Bauld, Linda | Baumann, Sophie | Haberecht, Katja | Schnuerer, Inga | Meyer, Christian | Rumpf, Hans-Jürgen | John, Ulrich | Gaertner, Beate | Barrault-Couchouron, Marion | Béracochéa, Marion | Allafort, Vincent | Barthélémy, Valérie | Bonnefoi, Hervé | Bussières, Emmanuel | Garguil, Véronique | Auriacombe, Marc | Saint-Jacques, Marianne | Dorval, Michel | M’Bailara, Katia | Segura-Garcia, Lidia | Ibañez-Martinez, Nuria | Mendive-Arbeloa, Juan Manuel | Anoro-Perminger, Manel | Diaz-Gallego, Pako | Piñar-Mateos, Mª Angeles | Colom-Farran, Joan | Deligianni, Marianthi | Yersin, Bertrand | Adam, Angeline | Weisner, Constance | Chi, Felicia | Lu, Wendy | Sterling, Stacy | Kraemer, Kevin L. | McGinnis, Kathleen A. | Fiellin, David A. | Skanderson, Melissa | Gordon, Adam J. | Robbins, Jonathan | Zickmund, Susan | Korthuis, P. Todd | Edelman, E. Jennifer | Hansen, Nathan B. | Cutter, Christopher J. | Dziura, James | Fiellin, Lynn E. | O’Connor, Patrick G. | Maisto, Stephen A. | Bedimo, Roger | Gilbert, Cynthia | Marconi, Vincent C. | Rimland, David | Rodriguez-Barradas, Maria | Simberkoff, Michael | Justice, Amy C. | Bryant, Kendall J. | Berman, Anne H | Shorter, Gillian W | Bray, Jeremy W | Barbosa, Carolina | Johansson, Magnus | Hester, Reid | Campbell, William | Souza Formigoni, Maria Lucia O. | Andrade, André Luzi Monezi | Sartes, Laisa Marcorela Andreoli | Sundström, Christopher | Eék, Niels | Kraepelien, Martin | Kaldo, Viktor | Fahlke, Claudia | Hernandez, Lynn | Becker, Sara J. | Jones, Richard N. | Graves, Hannah R. | Spirito, Anthony | Diestelkamp, Silke | Wartberg, Lutz | Arnaud, Nicolas | Thomasius, Rainer | Gaume, Jacques | Grazioli, Véronique | Fortini, Cristiana | Malan, Zelra | Mash, Bob | Everett-Murphy, Katherine | Grazioli, Véronique S. | Studer, Joseph | Mohler-Kuo, M. | Bertholet, Nicolas | Gmel, Gerhard | Doi, Lawrence | Cheyne, Helen | Jepson, Ruth | Luna, Vanesa | Echeverria, Leticia | Morales, Silvia | Barroso, Teresa | Abreu, Ângela | Aguiar, Cosma | Stewart, Duncan | Abreu, Angela | Brites, Riany M. | Jomar, Rafael | Marinho, Gerson | Parreira, Pedro | Seale, J. Paul | Johnson, J. Aaron | Henry, Dena | Chalmers, Sharon | Payne, Freida | Tuck, Linda | Morris, Akula | Gonçalves, Cátia | Besser, Bettina | Casajuana, Cristina | López-Pelayo, Hugo | Balcells, María Mercedes | Teixidó, Lídia | Miquel, Laia | Colom, Joan | Hepner, Kimberly A. | Hoggatt, Katherine. J. | Bogart, Andy | Paddock, Susan. M. | Hardoon, Sarah L | Petersen, Irene | Hamilton, Fiona L | Nazareth, Irwin | White, Ian R. | Marston, Louise | Wallace, Paul | Godfrey, Christine | Murray, Elizabeth | Sovinová, Hana | Csémy, Ladislav
doi:10.1186/s13722-016-0062-9
PMCID: PMC5032602  PMID: 27654147
2.  Taxometric Analysis of DSM-IV and DSM-5 Alcohol Use Disorders 
Drug and alcohol dependence  2012;129(1-2):60-69.
Background
With preparations currently being made for the Diagnostic and Statistical Manual of Mental Disorders-5th Edition (DSM-5), one prominent issue to resolve is whether alcohol use disorders are better represented as discrete categorical entities or as a dimensional construct. The purpose of this study was to investigate the latent structure of DSM-Fourth Edition (DSM-IV) and proposed DSM-5 alcohol use disorders.
Methods
The study used the Wave 2 National Epidemiologic Survey on Alcohol and Related Conditions (NESARC) to conduct taxometric analyses of DSM-IV and DSM-5 alcohol use disorders defined by different thresholds to determine the taxonic or dimensional structure underlying the disorders.
Results
DSM-IV and DSM-5 alcohol abuse and dependence criteria with 3+ thresholds demonstrated a dimensional structure. Corresponding thresholds with 4+ criteria were clearly taxonic, as were thresholds defined by cut-offs of 5+ and 6+ criteria.
Conclusions
DSM-IV and DSM-5 alcohol use disorders demonstrated a hybrid taxonic-dimensional structure. That is, DSM-IV and DSM-5 alcohol use disorders may be taxonically distinct compared to no disorder if defined by a threshold of 4 or more criteria. However, there may be dimensional variation remaining among non-problematic to subclinical cases. A careful and systematic program of structural research using taxometric and psychometric procedures is warranted.
doi:10.1016/j.drugalcdep.2012.09.010
PMCID: PMC5032837  PMID: 23122488
Alcohol use disorder; taxometric analysis; latent structure; taxon-dimensional hybrid structure; structural analysis
3.  Drinking Motives As Mediators of the Associations between Reinforcement Sensitivity and Alcohol Misuse and Problems 
Alcohol may be used and misused for different reasons, i.e., to enhance positive affect and to cope with negative affect. These to pathways are thought to depend on two distinct and relatively stable neurobiological systems: the behavioral activation (BAS; i.e., fun seeking, drive, reward responsiveness) and behavioral inhibition (BIS) systems. This study investigates the associations of BAS and BIS sensitivity with risky single-occasion drinking and alcohol use disorder in a representative sample of 5362 young Swiss men. In order to better understand the contribution of more proximal motivational factors in the associations of BIS and BAS with alcohol outcomes, mediations via drinking motives (i.e., enhancement, social, coping, conformity) was also tested. Risky single-occasion drinking and alcohol use disorder were positively associated with fun seeking and negatively with reward responsiveness. Drive was negatively associated with risky single-occasion drinking. BIS was positively associated with alcohol use disorder and negatively with risky single-occasion drinking. Positive associations of fun seeking with risky single-occasion drinking and alcohol use disorder were partially mediated mainly by enhancement motives. Negative association of drive with risky single-occasion drinking was partially mediated by conformity motives. The negative reward responsiveness—alcohol use disorder association was partially mediated, whereas the negative reward responsiveness—risky single-occasion drinking association was fully mediated, mainly by coping and enhancement motives. The positive BIS–alcohol use disorder association was fully mediated mainly by coping motives. Fun seeking constitutes a risk factor, whereas drive and reward responsiveness constitute protective factors against alcohol misuse and disorder. BIS constitutes a protective factor against risky single-occasion drinking and a risk factor for alcohol use disorder. The results of the mediation analysis suggest that prevention strategies targeting coping and enhancement motives may reduce the risk associated with high BIS and with high fun seeking, respectively.
doi:10.3389/fpsyg.2016.00718
PMCID: PMC4878201  PMID: 27252666
BIS/BAS scales; risky single occasion drinking; alcohol use disorder; DMQR-SF; young adults
4.  Psychometric properties of the 7-item game addiction scale among french and German speaking adults 
BMC Psychiatry  2016;16:132.
Background
The 7-item Game Addiction Scale (GAS) is a used to screen for addictive game use. Both cross cross-linguistic validation and validation in French and German is needed in adult samples. The objective of the study is to assess the factorial structure of the French and German versions of the GAS among adults.
Methods
Two samples of men from French (N = 3318) and German (N = 2665) language areas of Switzerland were assessed with the GAS, the Major Depression Inventory (MDI), the Brief Sensation Seeking Scale, and the Zuckerman-Kuhlman Personality Questionnaire (ZKPQ-50-cc). They were also assessed for cannabis and alcohol use.
Results
The internal consistency of the scale was satisfactory (Cronbach α = 0.85). A one-factor solution was found in both samples. Small and positive associations were found between GAS scores and the MDI, as well as the Neuroticism-Anxiety and Aggression-Hostility subscales of the ZKPQ-50-cc. A small negative association was found with the ZKPQ-50-cc Sociability subscale.
Conclusion
The GAS, in its French and German versions, is appropriate for the assessment of game addiction among adults.
Electronic supplementary material
The online version of this article (doi:10.1186/s12888-016-0836-3) contains supplementary material, which is available to authorized users.
doi:10.1186/s12888-016-0836-3
PMCID: PMC4862221  PMID: 27160387
Internet addiction; Internet Gaming Disorder; Game Addiction Scale
5.  Socioeconomic status and substance use among Swiss young men: a population-based cross-sectional study 
BMC Public Health  2016;16:333.
Background
Socioeconomic status (SES) is often inversely related to health outcomes and is likely to play a role in the use of psychoactive substances among young individuals, although little consensus exists on the association between SES and substance use.
The purpose of the study was to determine the association of three SES indicators (perceived family income, education level of participants, and parental education level) with past year use of alcohol, tobacco, cannabis, other illicit drugs and non-medical use of prescription drugs (NMPD) among Swiss young men.
Methods
Population-based cross-sectional study of 5,702 men at mean age twenty. Associations between SES indicators and substance use were assessed with regression models adjusted for age and linguistic region.
Results
Participants with average or below average perceived family income were less likely to report any use of alcohol (OR = O.75) but more likely to use tobacco daily (OR = 1.31) and cannabis weekly (OR = 1.27) compared to those with perceived above average family income.
Participants whose parents had only achieved obligatory education were less likely to engage in any use of alcohol (OR = 0.30), monthly risky single occasion drinking (RSOD, defined as 6 or more drinks per occasion) (OR = 0.48), any use of cannabis (OR = 0.53) and other illicit drugs (OR = 0.58), whereas those whose parents had only achieved secondary education were less at risk of engaging in cannabis (OR = 0.66 for any use and OR = 0.77 for more than once a week use) and other illicit drugs (OR = 0.74) use, compared to those whose parents had achieved tertiary education. Compared to participants who completed secondary or tertiary education, those who completed only obligatory education reported a higher risk of tobacco (OR = 1.18 for any use, OR = 1.31 for daily use), cannabis (OR = 1.23 for any use, OR = 1.37 for more than once a week use), and other illicit drugs (OR = 1.48) use. No association was found between NMPD and the studied SES variables.
Conclusion
The relationship between SES and substance use was complex in this sample. Higher socioeconomic status was associated with more alcohol and other illicit drugs use, while lower socioeconomic status was related to more tobacco use. Education level and perceived family income may have different impacts on substance use and may vary by substance.
doi:10.1186/s12889-016-2949-5
PMCID: PMC4832558  PMID: 27079787
Socio-economic status; Substance use; Alcohol; Tobacco; Illicit drugs
6.  Internet-Based Brief Intervention to Prevent Unhealthy Alcohol Use among Young Men: A Randomized Controlled Trial 
PLoS ONE  2015;10(12):e0144146.
Introduction
Alcohol use is one of the leading modifiable morbidity and mortality risk factors among young adults.
Study Design
2 parallel-group randomized controlled trial with follow-up at 1 and 6 months.
Setting/Participants
Internet based study in a general population sample of young men with low-risk drinking, recruited between June 2012 and February 2013.
Intervention: Internet-based brief alcohol primary prevention intervention (IBI). The IBI aims at preventing an increase in alcohol use: it consists of normative feedback, feedback on consequences, calorific value alcohol, computed blood alcohol concentration, indication that the reported alcohol use is associated with no or limited risks for health. Intervention group participants received the IBI. Control group (CG) participants completed only an assessment.
Main Outcome Measures
Alcohol use (number of drinks per week), binge drinking prevalence. Analyses were conducted in 2014–2015.
Results
Of 4365 men invited to participate, 1633 did so; 896 reported low-risk drinking and were randomized (IBI: n = 451; CG: n = 445). At baseline, 1 and 6 months, the mean (SD) number of drinks/week was 2.4(2.2), 2.3(2.6), 2.5(3.0) for IBI, and 2.4(2.3), 2.8(3.7), 2.7(3.9) for CG. Binge drinking, absent at baseline, was reported by 14.4% (IBI) and 19.0% (CG) at 1 month and by 13.3% (IBI) and 13.0% (CG) at 6 months. At 1 month, beneficial intervention effects were observed on the number of drinks/week (p = 0.05). No significant differences were observed at 6 months.
Conclusion
We found protective short term effects of a primary prevention IBI.
Trial Registration
Controlled-Trials.com ISRCTN55991918
doi:10.1371/journal.pone.0144146
PMCID: PMC4671673  PMID: 26642329
7.  Cannabis use and other predictors of the onset of daily cigarette use in young men: what matters most? Results from a longitudinal study 
BMC Public Health  2015;15:843.
Background
According to the gateway hypothesis, tobacco use is a gateway of cannabis use. However, there is increasing evidence that cannabis use also predicts the progression of tobacco use (reverse gateway hypothesis). Unfortunately, the importance of cannabis use compared to other predictors of tobacco use is less clear. The aim of this study was to examine which variables, in addition to cannabis use, best predict the onset of daily cigarette smoking in young men.
Methods
A total of 5,590 young Swiss men (mean age = 19.4 years, SD = 1.2) provided data on their substance use, socio-demographic background, religion, health, social context, and personality at baseline and after 18 months. We modelled the predictors of progression to daily cigarette smoking using logistic regression analyses (n = 4,230).
Results
In the multivariate overall model, use of cannabis remained among the strongest predictors for the onset of daily cigarette use. Daily cigarette use was also predicted by a lifetime use of at least 50 cigarettes, occasional cigarette use, educational level, religious affiliation, parental situation, peers with psychiatric problems, and sociability.
Conclusions
Our results highlight the relevance of cannabis use compared to other potential predictors of the progression of tobacco use and thereby support the reverse gateway hypothesis.
doi:10.1186/s12889-015-2194-3
PMCID: PMC4556311  PMID: 26330150
8.  Physical Activity and Snus: Is There a Link? 
The study aimed at assessing the link between physical activity (PA), sports activity and snus use among young men in Switzerland. Data from the Cohort Study on Substance Use Risk Factors (C-SURF) were used to measure PA with the International Physical Activity Questionnaire and sports activity with a single item. Multivariate logistic regression analysis was conducted to measure the association between snus use, PA and sports activity. Similar models were run for smoking and snuff use. Snus use increased in a dose-response association with PA (high level: OR = 1.72; 95% CI 1.16–2.55) and with individuals exercising once a week or more often (OR = 1.65; 95% CI 1.26–2.16; p < 0.001) or almost every day (OR = 2.27; 95% CI 1.72–3.01; p < 0.001) in separate models. Entered simultaneously, only sports and exercise maintained a basically unchanged significant dose-response relationship, whereas PA became non-significant. A non-significant dose-response relation was found for cigarette smoking and snuff use, indicating that the association with sport is specific to snus and not to tobacco use in general or smokeless tobacco in particular. This study showed that the association between snus use and sports is not specific to Nordic countries.
doi:10.3390/ijerph120707185
PMCID: PMC4515649  PMID: 26121189
smokeless tobacco; youth tobacco use; education—youth prevention
9.  Violence-related injury and gender: The role of alcohol and alcohol combined with illicit drugs 
Drug and alcohol review  2013;33(1):43-50.
Background
The positive relationship between alcohol use, gender and violence-related injury is well established. However, less is known about injuries when alcohol is used in combination with other drugs.
Method
Self-report information was collected on alcohol and illicit drug use in the six hours prior to a violence-related injury in probability samples of patients presenting to emergency departments (n=9686).
Results
Patients with violence-related injuries reported the highest rates of alcohol use (49% of men; 23% of women) and alcohol use combined with illicit drugs (8% of men; 4% of women) prior to the injury event while non-violent injury patients reported lower rates of alcohol use (17% of men; 8% of women) and alcohol use combined with drugs (2% for men; 1% for women). Marijuana/hashish was the most commonly reported drug. The odds of a violent injury were increased when alcohol was used (men: odds ratio [OR]=5.4, 95% confidence interval [CI] 4.6–6.3; women: OR=4.0, 95% CI 3.0–5.5) or when alcohol was combined with illicit drug use prior to the injury (men: OR=6.6, 95% CI 4.7–9.3; women: OR=5.7, 95% CI=2.7–12.2) compared to non-users. No significant change in the odds of a violent injury was observed for men or women when alcohol users were compared with alcohol and drug users.
Conclusion
The positive association between alcohol and violent injury does not appear to be altered by the added use of drugs. Additional work is needed to understand the interpersonal, contextual and cultural factors related to substance use to identify best prevention practices and develop appropriate policies.
doi:10.1111/dar.12087
PMCID: PMC3893118  PMID: 24261437
emergency department; alcohol and illicit drug use; violence-related injury; gender differences
10.  Predictors of onset of cannabis and other drug use in male young adults: results from a longitudinal study 
BMC Public Health  2014;14:1202.
Background
The use of cannabis and other illegal drugs is particularly prevalent in male young adults and is associated with severe health problems. This longitudinal study explored variables associated with the onset of cannabis use and the onset of illegal drug use other than cannabis separately in male young adults, including demographics, religion and religiosity, health, social context, substance use, and personality. Furthermore, we explored how far the gateway hypothesis and the common liability to addiction model are in line with the resulting prediction models.
Methods
The data were gathered within the Cohort Study on Substance Use Risk Factors (C-SURF). Young men aged around 20 years provided demographic, social, health, substance use, and personality-related data at baseline. Onset of cannabis and other drug use were assessed at 15-months follow-up. Samples of 2,774 and 4,254 individuals who indicated at baseline that they have not used cannabis and other drugs, respectively, in their life and who provided follow-up data were used for the prediction models. Hierarchical logistic stepwise regressions were conducted, in order to identify predictors of the late onset of cannabis and other drug use separately.
Results
Not providing for oneself, having siblings, depressiveness, parental divorce, lower parental knowledge of peers and the whereabouts, peer pressure, very low nicotine dependence, and sensation seeking were positively associated with the onset of cannabis use. Practising religion was negatively associated with the onset of cannabis use. Onset of drug use other than cannabis showed a positive association with depressiveness, antisocial personality disorder, lower parental knowledge of peers and the whereabouts, psychiatric problems of peers, problematic cannabis use, and sensation seeking.
Conclusions
Consideration of the predictor variables identified within this study may help to identify young male adults for whom preventive measures for cannabis or other drug use are most appropriate. The results provide evidence for both the gateway hypothesis and the common liability to addiction model and point to further variables like depressiveness or practising of religion that might influence the onset of drug use.
doi:10.1186/1471-2458-14-1202
PMCID: PMC4247759  PMID: 25416140
Onset; Cannabis; Drug use; Male; Young adults
11.  A comparative risk assessment of burden of disease and injury attributable to 67 risk factors and risk factor clusters in 21 regions, 1990–2010: a systematic analysis for the Global Burden of Disease Study 2010 
Lim, Stephen S | Vos, Theo | Flaxman, Abraham D | Danaei, Goodarz | Shibuya, Kenji | Adair-Rohani, Heather | Amann, Markus | Anderson, H Ross | Andrews, Kathryn G | Aryee, Martin | Atkinson, Charles | Bacchus, Loraine J | Bahalim, Adil N | Balakrishnan, Kalpana | Balmes, John | Barker-Collo, Suzanne | Baxter, Amanda | Bell, Michelle L | Blore, Jed D | Blyth, Fiona | Bonner, Carissa | Borges, Guilherme | Bourne, Rupert | Boussinesq, Michel | Brauer, Michael | Brooks, Peter | Bruce, Nigel G | Brunekreef, Bert | Bryan-Hancock, Claire | Bucello, Chiara | Buchbinder, Rachelle | Bull, Fiona | Burnett, Richard T | Byers, Tim E | Calabria, Bianca | Carapetis, Jonathan | Carnahan, Emily | Chafe, Zoe | Charlson, Fiona | Chen, Honglei | Chen, Jian Shen | Cheng, Andrew Tai-Ann | Child, Jennifer Christine | Cohen, Aaron | Colson, K Ellicott | Cowie, Benjamin C | Darby, Sarah | Darling, Susan | Davis, Adrian | Degenhardt, Louisa | Dentener, Frank | Des Jarlais, Don C | Devries, Karen | Dherani, Mukesh | Ding, Eric L | Dorsey, E Ray | Driscoll, Tim | Edmond, Karen | Ali, Suad Eltahir | Engell, Rebecca E | Erwin, Patricia J | Fahimi, Saman | Falder, Gail | Farzadfar, Farshad | Ferrari, Alize | Finucane, Mariel M | Flaxman, Seth | Fowkes, Francis Gerry R | Freedman, Greg | Freeman, Michael K | Gakidou, Emmanuela | Ghosh, Santu | Giovannucci, Edward | Gmel, Gerhard | Graham, Kathryn | Grainger, Rebecca | Grant, Bridget | Gunnell, David | Gutierrez, Hialy R | Hall, Wayne | Hoek, Hans W | Hogan, Anthony | Hosgood, H Dean | Hoy, Damian | Hu, Howard | Hubbell, Bryan J | Hutchings, Sally J | Ibeanusi, Sydney E | Jacklyn, Gemma L | Jasrasaria, Rashmi | Jonas, Jost B | Kan, Haidong | Kanis, John A | Kassebaum, Nicholas | Kawakami, Norito | Khang, Young-Ho | Khatibzadeh, Shahab | Khoo, Jon-Paul | Kok, Cindy | Laden, Francine | Lalloo, Ratilal | Lan, Qing | Lathlean, Tim | Leasher, Janet L | Leigh, James | Li, Yang | Lin, John Kent | Lipshultz, Steven E | London, Stephanie | Lozano, Rafael | Lu, Yuan | Mak, Joelle | Malekzadeh, Reza | Mallinger, Leslie | Marcenes, Wagner | March, Lyn | Marks, Robin | Martin, Randall | McGale, Paul | McGrath, John | Mehta, Sumi | Mensah, George A | Merriman, Tony R | Micha, Renata | Michaud, Catherine | Mishra, Vinod | Hanafiah, Khayriyyah Mohd | Mokdad, Ali A | Morawska, Lidia | Mozaff arian, Dariush | Murphy, Tasha | Naghavi, Mohsen | Neal, Bruce | Nelson, Paul K | Nolla, Joan Miquel | Norman, Rosana | Olives, Casey | Omer, Saad B | Orchard, Jessica | Osborne, Richard | Ostro, Bart | Page, Andrew | Pandey, Kiran D | Parry, Charles D H | Passmore, Erin | Patra, Jayadeep | Pearce, Neil | Pelizzari, Pamela M | Petzold, Max | Phillips, Michael R | Pope, Dan | Pope III, C Arden | Powles, John | Rao, Mayuree | Razavi, Homie | Rehfuess, Eva A | Rehm, Jürgen T | Ritz, Beate | Rivara, Frederick P | Roberts, Thomas | Robinson, Carolyn | Rodriguez-Portales, Jose A | Romieu, Isabelle | Room, Robin | Rosenfeld, Lisa C | Roy, Ananya | Rushton, Lesley | Salomon, Joshua A | Sampson, Uchechukwu | Sanchez-Riera, Lidia | Sanman, Ella | Sapkota, Amir | Seedat, Soraya | Shi, Peilin | Shield, Kevin | Shivakoti, Rupak | Singh, Gitanjali M | Sleet, David A | Smith, Emma | Smith, Kirk R | Stapelberg, Nicolas J C | Steenland, Kyle | Stöckl, Heidi | Stovner, Lars Jacob | Straif, Kurt | Straney, Lahn | Thurston, George D | Tran, Jimmy H | Van Dingenen, Rita | van Donkelaar, Aaron | Veerman, J Lennert | Vijayakumar, Lakshmi | Weintraub, Robert | Weissman, Myrna M | White, Richard A | Whiteford, Harvey | Wiersma, Steven T | Wilkinson, James D | Williams, Hywel C | Williams, Warwick | Wilson, Nicholas | Woolf, Anthony D | Yip, Paul | Zielinski, Jan M | Lopez, Alan D | Murray, Christopher J L | Ezzati, Majid
Lancet  2012;380(9859):2224-2260.
Summary
Background
Quantification of the disease burden caused by different risks informs prevention by providing an account of health loss different to that provided by a disease-by-disease analysis. No complete revision of global disease burden caused by risk factors has been done since a comparative risk assessment in 2000, and no previous analysis has assessed changes in burden attributable to risk factors over time.
Methods
We estimated deaths and disability-adjusted life years (DALYs; sum of years lived with disability [YLD] and years of life lost [YLL]) attributable to the independent effects of 67 risk factors and clusters of risk factors for 21 regions in 1990 and 2010. We estimated exposure distributions for each year, region, sex, and age group, and relative risks per unit of exposure by systematically reviewing and synthesising published and unpublished data. We used these estimates, together with estimates of cause-specific deaths and DALYs from the Global Burden of Disease Study 2010, to calculate the burden attributable to each risk factor exposure compared with the theoretical-minimum-risk exposure. We incorporated uncertainty in disease burden, relative risks, and exposures into our estimates of attributable burden.
Findings
In 2010, the three leading risk factors for global disease burden were high blood pressure (7·0% [95% uncertainty interval 6·2–7·7] of global DALYs), tobacco smoking including second-hand smoke (6·3% [5·5–7·0]), and alcohol use (5·5% [5·0–5·9]). In 1990, the leading risks were childhood underweight (7·9% [6·8–9·4]), household air pollution from solid fuels (HAP; 7·0% [5·6–8·3]), and tobacco smoking including second-hand smoke (6·1% [5·4–6·8]). Dietary risk factors and physical inactivity collectively accounted for 10·0% (95% UI 9·2–10·8) of global DALYs in 2010, with the most prominent dietary risks being diets low in fruits and those high in sodium. Several risks that primarily affect childhood communicable diseases, including unimproved water and sanitation and childhood micronutrient deficiencies, fell in rank between 1990 and 2010, with unimproved water we and sanitation accounting for 0·9% (0·4–1·6) of global DALYs in 2010. However, in most of sub-Saharan Africa childhood underweight, HAP, and non-exclusive and discontinued breastfeeding were the leading risks in 2010, while HAP was the leading risk in south Asia. The leading risk factor in Eastern Europe, most of Latin America, and southern sub-Saharan Africa in 2010 was alcohol use; in most of Asia, North Africa and Middle East, and central Europe it was high blood pressure. Despite declines, tobacco smoking including second-hand smoke remained the leading risk in high-income north America and western Europe. High body-mass index has increased globally and it is the leading risk in Australasia and southern Latin America, and also ranks high in other high-income regions, North Africa and Middle East, and Oceania.
Interpretation
Worldwide, the contribution of different risk factors to disease burden has changed substantially, with a shift away from risks for communicable diseases in children towards those for non-communicable diseases in adults. These changes are related to the ageing population, decreased mortality among children younger than 5 years, changes in cause-of-death composition, and changes in risk factor exposures. New evidence has led to changes in the magnitude of key risks including unimproved water and sanitation, vitamin A and zinc deficiencies, and ambient particulate matter pollution. The extent to which the epidemiological shift has occurred and what the leading risks currently are varies greatly across regions. In much of sub-Saharan Africa, the leading risks are still those associated with poverty and those that affect children.
Funding
Bill & Melinda Gates Foundation.
doi:10.1016/S0140-6736(12)61766-8
PMCID: PMC4156511  PMID: 23245609
12.  Social roles and alcohol consumption: a study of 10 industrialised countries* 
Social science & medicine (1982)  2009;68(7):1263-1270.
The empirical evidence as regards the precise association between alcohol use and social roles, and these associations across genders and cultures is heterogeneous. The literature tends to focus on two central but conflicting theories. The first - classic role theory - assumes that a higher number of social roles is associated with a more structured life and thus fewer opportunities to drink heavily. The second - the multiple burden hypothesis - posits that the increasing complexity of multiple social roles leads to higher stress levels, and thus to increased alcohol use. Survey data on 25- to 54-year olds in ten western industrialised countries which participate in the GenACIS project were used to test whether holding the three main social roles - partnership, parenthood, and paid labour - had a more protective or a more detrimental association with problematic alcohol use than holding fewer roles. Age and education were included as possible confounders, while the outcome variables were risky single occasion drinking (RSOD) and heavy-volume drinking. For both genders and in almost all countries, the study found that those who had all three roles were least likely to drink heavily or engage in RSOD, thus supporting the assumptions of classic role theory. It also found that the protective effect of multiple roles was more consistent for RSOD. There were a few countries where a two-role model gave a better fit. Results for Germany (RSOD), Switzerland, and the US (heavy volume) indicate that the role of paid labour appears to be particularly relevant for risky alcohol use among women. Despite some variability in the association between paid labour and heavy drinking or RSOD among women, in almost all countries the greater the number of roles a person held, the lower their risk of this type of alcohol use was.
doi:10.1016/j.socscimed.2009.01.018
PMCID: PMC4145146  PMID: 19232807
Social roles; alcohol; gender; international comparisons
13.  Does Drinking Location Matter? Profiles of Risky Single-Occasion Drinking by Location and Alcohol-Related Harm among Young Men 
In adolescents and young adults, acute consequences like injuries account for a substantial proportion of alcohol-related harm, especially in risky single-occasion (RSO) drinkers. The primary aim of the study was to characterize different drinking profiles in RSO drinkers according to drinking locations and their relationship to negative, alcohol-related consequences. The sample consisted of 2746 young men from the Cohort Study on Substance Use Risk Factors who had reported drinking six or more drinks on a single-occasion at least monthly over the preceding 12 months. Principal component analysis on the frequency and amount of drinking at 11 different locations was conducted, and 2 distinguishable components emerged: a non-party-dimension (loading high on theater/cinema, sport clubs, other clubs/societies, restaurants, and sport events) and a party-dimension (loading high on someone else’s home, pubs/bars, discos/nightclubs, outdoor public places, special events, and home). Differential impacts of drinking location profiles were observed on severe negative alcohol-related consequences (SAC). Relative to those classified as low or intermediate in both dimensions, no significant difference experiencing SAC was found among those who were classified as high in the non-party-dimension only. However, those who were classified as high in the party-dimension alone or in both dimensions were more likely to experience SAC. These differential effects remained after adjusting for alcohol consumption (volume and risky single-occasion drinking), personality traits, and peer-influence [adjusted OR = 0.83 (0.68–1.02), 1.57 (1.27–1.96), and 1.72 (1.23–2.41), respectively], indicating independent effects of drinking location on SAC. The inclusion of sociodemographic factors did not alter this association. The fact that this cluster of party-dimension locations seems to predispose young men to experiencing SAC has important implications for alcohol control policies.
doi:10.3389/fpubh.2014.00064
PMCID: PMC4050430  PMID: 24959529
drinking locations; drinking profiles; risky single-occasion drinking; negative alcohol-related consequences
14.  A Comparison of two Case-crossover Methods for Studying the Dose-Response Relationship Between Alcohol and Injury 
Contemporary drug problems  2014;41(1):04-.
Background:
This study compares dose-response injury risk estimates for two control periods defined as the same 6-hour period the week prior and the set of all non-sleeping 6-hour periods over the past year.
Method:
Dose-response injury risk estimates for the multiple match controls are generated via the application of a maximum-likelihood approach.
Results:
Injury risk associated with any (i.e., 1 drink or more) drinking 6 hours prior to injury was similar for the two control choices (last week and usual frequency). For 1-4 drinks, risk estimates were similar across control period definitions; for 5+ drinks, risk using the week prior as the control was nearly double that using the past 12 months as the control.
Conclusions:
Although studies with smaller ns may benefit from the increase in precision from the use of the multiple control periods, results indicate that heavy drinking injury risk estimates should be used with caution.
PMCID: PMC4013001  PMID: 24817774
relative risk; case-crossover; dose-response; control period definition
15.  Alcohol consumption and social inequality at the individual and country levels—results from an international study 
Background: International comparisons of social inequalities in alcohol use have not been extensively investigated. The purpose of this study was to examine the relationship of country-level characteristics and individual socio-economic status (SES) on individual alcohol consumption in 33 countries. Methods: Data on 101 525 men and women collected by cross-sectional surveys in 33 countries of the GENACIS study were used. Individual SES was measured by highest attained educational level. Alcohol use measures included drinking status and monthly risky single occasion drinking (RSOD). The relationship between individuals’ education and drinking indicators was examined by meta-analysis. In a second step the individual level data and country data were combined and tested in multilevel models. As country level indicators we used the Purchasing Power Parity of the gross national income, the Gini coefficient and the Gender Gap Index. Results: For both genders and all countries higher individual SES was positively associated with drinking status. Also higher country level SES was associated with higher proportions of drinkers. Lower SES was associated with RSOD among men. Women of higher SES in low income countries were more often RSO drinkers than women of lower SES. The opposite was true in higher income countries. Conclusion: For the most part, findings regarding SES and drinking in higher income countries were as expected. However, women of higher SES in low and middle income countries appear at higher risk of engaging in RSOD. This finding should be kept in mind when developing new policy and prevention initiatives.
doi:10.1093/eurpub/cks044
PMCID: PMC3610336  PMID: 22562712
16.  Use of Neuroenhancement Drugs: Prevalence, Frequency and Use Expectations in Switzerland 
Objective: The present study investigates the use expectations, prevalence and frequency of neuroenhancement drug (ND) use among the Swiss male population, separating college students from others. Methods: Young Swiss men were invited to participate in the Cohort Study on Substance Use Risk Factors. A total of 5,967 participants responded to questions on six types of NDs (wakefulness medication, antidepressants, Alzheimer’s disease medication, Parkinson’s disease medication, attention deficit-hyperactivity disorder (ADHD) medication, and beta-blockers). The frequency of use depending on five expectations (to enhance wakefulness, attention, memory, concentration and stress reduction) was analyzed for a twelve-month period. Results: (1) About 3% of the sample indicated use of at least one ND; (2) ADHD medication was the most prevalent; (3) The type of ND preferred differed depending on academic status (4). Quantitatively, over the year, college student users used ND much less frequently than other users. Conclusions: Prevalence of ND use is low in Switzerland relative to other countries such as the United States. Patterns of ND use differed depending on academic status, suggesting that while college student ND users tended to do so rarely (probably to enhance cognitive abilities for exams), non-college male users used other NDs more frequently (probably to “get high”).
doi:10.3390/ijerph110303032
PMCID: PMC3987019  PMID: 24625621
college students; expectations of use; neuroenhancement; prevalence; smart drugs
17.  Prevalence of and Associated Factors for Adult Attention Deficit Hyperactivity Disorder in Young Swiss Men 
PLoS ONE  2014;9(2):e89298.
Objective
The present study aimed to measure the prevalence of adult attention deficit hyperactivity disorder (ADHD) in a large, representative sample of young Swiss men and to assess factors associated with this disorder.
Methods
Our sample consisted of 5656 Swiss men (mean age 20 years) who participated in the Cohort Study on Substance Use Risk Factors (C-SURF). ADHD was assessed with the World Health Organization (WHO) adult ADHD Self Report Screener (ASRS). Logistic regression analyses were conducted to assess the association between ADHD and several socio-demographic, clinical and familial factors.
Results
The prevalence of ADHD was 4.0%, being higher in older and French-speaking conscripts. A higher prevalence also was identified among men whose mothers had completed primary or high school/university and those with a family history of alcohol or psychiatric problems. Additionally, adults with ADHD demonstrated impairment in their professional life, as well as considerable mental health impairment.
Conclusion
Our results demonstrate that ADHD is common among young Swiss men. The impairments in function and mental health we observed highlight the need for further support and interventions to reduce burden in affected individuals. Interventions that incorporate the whole family also seem crucial.
doi:10.1371/journal.pone.0089298
PMCID: PMC3930697  PMID: 24586672
19.  Factor Structure of Early Smoking Experiences and Associations with Smoking Behavior: Valence or Sensitivity Model? 
The Early Smoking Experience (ESE) questionnaire is the most widely used questionnaire to assess initial subjective experiences of cigarette smoking. However, its factor structure is not clearly defined and can be perceived from two main standpoints: valence, or positive and negative experiences, and sensitivity to nicotine. This article explores the ESE’s factor structure and determines which standpoint was more relevant. It compares two groups of young Swiss men (German- and French-speaking). We examined baseline data on 3,368 tobacco users from a representative sample in the ongoing Cohort Study on Substance Use Risk Factors (C-SURF). ESE, continued tobacco use, weekly smoking and nicotine dependence were assessed. Exploratory structural equation modeling (ESEM) and structural equation modeling (SEM) were performed. ESEM clearly distinguished positive experiences from negative experiences, but negative experiences were divided in experiences related to dizziness and experiences related to irritations. SEM underlined the reinforcing effects of positive experiences, but also of experiences related to dizziness on nicotine dependence and weekly smoking. The best ESE structure for predictive accuracy of experiences on smoking behavior was a compromise between the valence and sensitivity standpoints, which showed clinical relevance.
doi:10.3390/ijerph10126305
PMCID: PMC3881115  PMID: 24287854
early smoking experience; factor structure; smoking behavior; tobacco
20.  Body mass index and health-related quality of life among young Swiss men 
BMC Public Health  2013;13:1028.
Background
Studies about the association between body mass index (BMI) and health-related quality of life (HRQOL) are often limited, because they 1) did not include a broad range of health-risk behaviors as covariates; 2) relied on clinical samples, which might lead to biased results; and 3) did not incorporate underweight individuals. Hence, this study aims to examine associations between BMI (from being underweight through obesity) and HRQOL in a population-based sample, while considering multiple health-risk behaviors (low physical activity, risky alcohol consumption, daily cigarette smoking, frequent cannabis use) as well as socio-demographic characteristics.
Methods
A total of 5 387 young Swiss men (mean age = 19.99; standard deviation = 1.24) of a cross-sectional population-based study were included. BMI was calculated (kg/m2) based on self-reported height and weight and divided into ‘underweight’ (<18.5), ‘normal weight’ (18.5-24.9), ‘overweight’ (25.0-29.9) and ‘obese’ (≥30.0). Mental and physical HRQOL was assessed via the SF-12v2. Self-reported information on physical activity, substance use (alcohol, cigarettes, and cannabis) and socio-demographic characteristics also was collected. Logistic regression analyses were conducted to study the associations between BMI categories and below average mental or physical HRQOL. Substance use variables and socio-demographic variables were used as covariates.
Results
Altogether, 76.3% were normal weight, whereas 3.3% were underweight, 16.5% overweight and 3.9% obese. Being overweight or obese was associated with reduced physical HRQOL (adjusted OR [95% CI] = 1.58 [1.18-2.13] and 2.45 [1.57-3.83], respectively), whereas being underweight predicted reduced mental HRQOL (adjusted OR [95% CI] = 1.49 [1.08-2.05]). Surprisingly, obesity decreased the likelihood of experiencing below average mental HRQOL (adjusted OR [95% CI] = 0.66 [0.46-0.94]). Besides BMI, expressed as a categorical variable, all health-risk behaviors and socio-demographic variables were associated with reduced physical and/or mental HRQOL.
Conclusions
Deviations from normal weight are, even after controlling for important health-risk behaviors and socio-demographic characteristics, associated with compromised physical or mental HRQOL among young men. Hence, preventive programs should aim to preserve or re-establish normal weight. The self-appraised positive mental well-being of obese men noted here, which possibly reflects a response shift, might complicate such efforts.
doi:10.1186/1471-2458-13-1028
PMCID: PMC3840558  PMID: 24172041
Health-related quality of life; Body mass index; Physical activity; Alcohol; Cigarettes; Cannabis
21.  A Pre-Post Study on the Appropriateness and Effectiveness of a Web- and Text Messaging-Based Intervention to Reduce Problem Drinking in Emerging Adults 
Background
Problem drinking, particularly risky single-occasion drinking (RSOD), also called “binge drinking”, is widespread among adolescents and young adults in most Western countries. Few studies have tested the effectiveness of interventions to reduce RSOD in young people with heterogeneous and particularly lower educational background.
Objective
To test the appropriateness and initial effectiveness of a combined, individually tailored Web- and text messaging (SMS)–based intervention program to reduce problem drinking in vocational school students.
Methods
The fully automated program provided: (1) online feedback about an individual’s drinking pattern compared to the drinking norms of an age- and gender-specific reference group, and (2) recurrent individualized SMS messages over a time period of 3 months. Generalized Estimating Equation (GEE) analyses were used to investigate the longitudinal courses of the following outcomes over the study period of 3 months: RSOD, alcohol-related problems, mean number of standard drinks per week, and maximum number of standard drinks on an occasion.
Results
The program was tested in 36 school classes at 7 vocational schools in Switzerland. Regardless of their drinking behavior, 477 vocational school students who owned a mobile phone were invited to participate in the program. Of these, 364 (76.3%) participated in the program. During the intervention period, 23 out of 364 (6.3%) persons unsubscribed from participating in the program. The GEE analyses revealed decreases in the percentage of persons with RSOD from baseline (75.5%, 210/278) to follow-up assessment (67.6%, 188/278, P<.001), in the percentage of persons with alcohol-related problems (20.4%, 57/280 to 14.3%, 40/280, P=.009), and in the mean number of standard drinks per week: 13.4 (SD 15.3) to 11.3 (SD 14.0), P=.002. They also revealed a trend toward a decrease in the mean of the maximum number of drinks consumed on an occasion: 11.3 (SD 10.3) to 10.5 (SD 10.3), P=.08.
Conclusions
The results show high acceptance and promising effectiveness of this interventional approach, which could be easily and economically implemented within school classes.
doi:10.2196/jmir.2755
PMCID: PMC3785975  PMID: 23999406
alcohol intervention; problem drinking; young people; text messaging; Internet
22.  Alcohol-Related Negative Consequences among Drinkers around the World 
Addiction (Abingdon, England)  2011;106(8):1391-1405.
Aims
This paper examines (1) gender and country differences in negative consequences related to drinking; (2) relative rates of different consequences; (3) country-level predictors of consequences.
Design, setting and participants
Multi-level analyses used survey data from the GENACIS collaboration.
Measurements
Measures included 17 negative consequences grouped into (a) high endorsement acute, (b) personal and (c) social. Country-level measures included average frequency and quantity of drinking, percent current drinkers, Gross Domestic Product (GDP) and Human Development Index (HDI).
Findings
Overall, the three groupings of consequences were reported by 44%, 12% and 7% of men and by 31%, 6% and 3% of women, respectively. More men than women endorsed all consequences but gender differences were greatest for consequences associated with chronic drinking and social consequences related to male roles. The highest prevalence of consequences was in Uganda, lowest in Uruguay. Personal and social consequences were more likely in countries with higher usual quantity, fewer current drinkers, and lower scores on GDP and HDI. However, significant interactions with individual-level quantity indicated a stronger relationship between consequences and usual quantity among drinkers in countries with lower quantity, more current drinkers and higher scores on GDP and HDI.
Conclusions
Both gender and country need to be taken into consideration when assessing adverse drinking consequences. Individual measures of alcohol consumption and country-level variables are associated with experiencing such consequences. Additionally, country-level variables affect the strength of the relationship between usual quantity consumed by individuals and adverse consequences.
doi:10.1111/j.1360-0443.2011.03425.x
PMCID: PMC3682406  PMID: 21395893

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